The articlesaid,except for mutual business trade that was the main trade method between Tang dynasty and frontier nationalities,during some series of developingfrontier,they may adopted force,political marries,giving some reputationand giving some gift,altogethergiving trade that kept a friendly political relationship between Tang dynasty and frontier was a kind of important trade metho

Social and economic development and selection of water resources guarantee mechanism of border minority nationality regions in China——Case study of Hulun Buir City;